Tank tool for a tank having one or more fluids and processes performed using the tank tool

ABSTRACT

A multi-function tank tool including a body, an internal passageway, an upper end and a lower end. The lower end is configured to connect a hose so that a fluid travels in the internal passageway. The upper end includes at least one opening communicating with an interior of the tank. A first hose can be connected to a lower end of the body. The tank may have oil, vapor and an oil/vapor interface. The tank tool can perform at least one of the following: grounding an interior of the tank using at least the tank tool and the first hose; agitating one or more fluids traveling through the internal passageway to mix the one or more fluids traveling through the internal passageway; directing a hot oil adjacent the oil/vapor interface using at least the tank tool and the first hose; and, attaching the tool to a floating tank roof.

RELATED APPLICATION

The subject patent application is a divisional application of U.S.patent application Ser. No. 16/282,243 filed on Feb. 21, 2019, theentire contents of which are herein incorporated by reference.

FIELD OF THE INVENTION

The present invention is directed to a tank tool for a tank having oneor more fluids and one or more processes/methods facilitated and/orperformed using the tank tool. The preferred processes/methodsfacilitated and/or performed by the tank tool may include but are notlimited to one or more of the following: (i) grounding an interior ofthe tank using at least the tank tool and at least one hose connected tothe tank tool; (ii) agitating one or more fluids traveling (e.g.,upwardly or downwardly) through an internal passageway of the tank toolto mix the one or more fluids traveling through the internal passageway;(iii) directing a hot oil adjacent the liquid/gas interface (e.g.,oil/vapor interface) using at least the tank tool and at least one hoseconnected to the tank tool; and/or, (iv) attaching one or more tanktools to a floating tank roof.

BACKGROUND OF THE INVENTION

The storage of liquids including but not limited to flammable liquids(e.g., oil, gasoline, etc.) and an associated vapor/gas in a tank hasnumerous inherent issues/problems. For example, a fire can occur in thetank which is extremely undesirable.

There is a need for a tank tool that injects a fire suppression orextinguishing substance (e.g., fire foam) into the tank where allindividuals associated with the injection process are at a safe distancefrom the tank during the injection process and with the suppression orextinguishing substance being injected into the tank in asuperior/optimal condition to suppress/extinguish the fire in anextremely short time period.

Also, the tank may periodically need to be cleaned by injecting largevolumes of one or more cleaning fluids/substances (e.g., cleaningchemical(s) and water) into the tank with the one or more cleaningfluids/substances. There is a need for a tank tool that injects into thetank the one or more cleaning fluids/substances in a superior/optimalcondition to effectively and thoroughly clean the tank.

Further, bad oil in the tank needs to be treated or an evacuationmethod/process must be established where no bad oil is evacuated duringthe evacuation method/process. For example, a tank tool is needed thatincludes an oil removal port for removing only good oil from the tank(i.e., oil that is not 99% or greater pure oil) located above theapproximately four foot of bad oil at the bottom of a tank. Anotherexample is the need for a tank tool configured to allow the injection ofone or more chemicals at or adjacent the tank's top liquid level totreat bad oil by a chemical treater (i.e., an individual or individuals)located in a safe area. Traditionally, a chemical treater is on the topof the tank while adding one or more chemicals to the tank through oneor more lids or access areas formed in the top of the tank to treat thebad oil. A tank tool is need where the chemical treater is nowhere nearone or more lids or access areas formed in the top of the tank and/orthe cleaning substance is released in the tank a superior/optimalcondition.

Moreover, there is a need for a tank tool that evacuates vapor includingthe heaviest vapor molecules from the tank such that the vapor duringevacuation remains in a state that the vapor will not block partially orcompletely one or more hoses/conduits used to evacuate the vapor fromthe tank including vapor having the heaviest molecules that can readilyform condensation in the one or more hoses/conduits used to evacuate thevapor.

There also exists a need for a tank tool that has one or more detachablefloats where the float or floats are configured such that varying thelength of the one or more detachable floats while maintaining thediameter of the floats constant or substantially constant allows thetank tool to be used in tanks differing significantly in size (e.g.,tanks ranging from 15.5 feet tall and a 500 barrel storage capacity to50 feet tall and 500,000 barrel capacity).

There further exists a need for a tank tool that injects a hot oiladjacent the liquid/gas interface in the tank to significantly reducethe Reid Vapor Pressure.

There is a need for a tank tool that is configured to be attached to afloating roof of a tank to achieve one or more of the following: (i)position the tank tool at the top or uppermost portion of the tankwithout any floats being directly attached to tank tool; (ii) a tanktool that moves with the floating roof of the tank; and/or, (iii) one ormore tank tools that are located or oriented in a specific andpredetermined area/region of the tank.

There is also a need for a tool that allows for the introduction ofnitrogen under pressure in the tank to cause harmful gases to exitthrough one or more discharge openings or areas in the top or about thetop of the tank to force harmful gases out of the one or more openingsor areas in the top or about the top of the tank.

There is a further need for a tank tool that reduces the stress on oneor more floats that are directly attached to the tank tool.

Moreover, there is a need for a tank tool that acts to ground aninterior of the tank when, for example, a non-conductive substance isapplied to an interior surface of tank such that any grounding systemattached to the exterior surface of the tank is ineffective at groundingthe interior of the tank.

Preferred aspects of the present invention are designed to address one,several or all of the above issues as well as other issues that will bereadily understood by one of ordinary skill in the art.

OBJECTS AND SUMMARY OF THE INVENTION

An object of a preferred form of the present invention is to provide anovel and unobvious tank tool.

Another object of a preferred form of the present invention is toprovide a tank tool that acts on one or more fluids/substances passingthrough the tank tool (upwardly or downwardly) to improve at least oneaspect of the one or more fluids/substances passing through the tanktool.

A further object of a preferred form of the present invention is toprovide a tank tool having one or more impellers/agitators that act onone or more fluids/substances passing through (e.g., upwardly ordownwardly) the tank tool to improve at least aspect of the one or morefluids/substances passing through the tank tool.

Yet a further object of a preferred form of the present invention is toprovide a tank tool that improves the storage and treatment of oil inthe storage tank.

Still a further object of a preferred form of the present invention isto provide a tank tool that can perform at least one of the following:grounding an interior of the tank using at least the tank tool and atleast one hose attached to the tank tool; agitating one or morefluids/substances traveling through the internal passageway of the tanktool to mix, stir or otherwise agitate the one or more fluids/substancestraveling through the internal passageway of the tank tool; directing ahot oil adjacent the oil/vapor interface using at least the tank tooland at least one hose/conduit connected to the tank tool; and, attachingthe tank tool to a floating roof of a tank.

A further object of a preferred form of the present invention is toprovide one or more tank tools configured to be connected to a floatingtank roof.

Still a further object of a preferred form of the present invention isto provide a plurality of tank tools attached to differentportions/sections/segments of a floating tank roof.

Still another object of a preferred form of the present invention is toprovide a tank tool that has one or more detachable floats where thefloat or floats are configured such that varying the length of the oneor more detachable floats while maintaining the diameter of the floatsconstant or substantially constant allows the tank tool to be used intanks differing significantly in size (e.g., tanks ranging from 15.5feet tall and a 500 barrel storage capacity to 50 feet tall and 500,000barrel capacity).

A further object of a preferred form of the present invention is toprovide a tank tool that acts to ground an interior of the tank when,for example, a non-conductive substance is applied to an interiorsurface of tank such that any grounding system attached to the exteriorsurface of the tank is ineffective at grounding the interior of thetank.

Another object of a preferred form of the present invention is toprovide a tank tool that injects a fire suppression or extinguishingsubstance (e.g., fire foam) into the tank where all individualsassociated with the injection process are at a safe distance from thetank during the injection process and/or with the suppression orextinguishing substance being injected into the tank in asuperior/optimal condition to suppress/extinguish the fire in anextremely short time period.

A further object of a preferred form of the present invention is toprovide a tank tool that injects into the tank one or more cleaningfluids/substances in a superior/optimal condition to effectively andthoroughly clean the tank.

Yet a further object of a preferred form of the present invention isdirected to a tank tool that includes an oil removal port for removingonly good oil from the tank (i.e., oil that is not 99% or greater pureoil) located above the approximately four foot of bad oil in the bottomof the tank.

Still another object of a preferred form of the present invention is toprovide a tank tool that allows for the injection of one or morechemicals at or adjacent the tank's top liquid level to treat bad oil bya chemical treater (i.e., an individual or individuals) located in asafe area.

Still a further object of a preferred form of the present invention isto provide a tank tool that evacuates vapor from the tank such that thevapor during evacuation remains in a state that will not block partiallyor completely one or more hoses/conduits used to evacuate the vapor fromthe tank including vapor having the heaviest molecules that can readilyform condensation in the one or more hoses/conduits used to evacuate thevapor.

Another object of a preferred form of the present invention is toprovide a tank tool with a face/support plate for one or more floats toreduce stress on the one or more floats.

Still another object of a preferred form of the present invention isdirected to a tank tool that allows for the introduction of nitrogenunder pressure to be directed through a main body of the tank tool andreleased in the tank to cause harmful gases to exit through a dischargeopening in the top or about the top of the tank. The pressurizednitrogen forces the harmful gases out of the one or more dischargeopenings in the top or about the top of the tank.

Still a further object of a preferred form of the present invention isdirected to a tank tool and associated process that injects a hot oiladjacent the liquid/gas interface in the tank to significantly reducethe Reid Vapor Pressure.

It must be understood that no one embodiment of the present inventionneed include all of the aforementioned objects of the present invention.Rather, a given embodiment may include one or none of the aforementionedobjects. Accordingly, these objects are not to be used to limit thescope of the claims of the present invention.

In summary, one preferred embodiment of the present invention isdirected to a tank tool for a tank containing one or more fluids. Thetank tool includes a body having an internal passageway, an upper endand a lower end. The internal passageway of the body extends between theupper end of the body and the lower end of the body. The lower end ofthe body is configured to connect a hose to the body so that a fluid cantravel in the internal passageway between the upper end of the body andthe lower end of the body. The upper end of the body includes at leastone opening so that the internal passageway of the body is in fluidcommunication with an interior of the tank when the tank tool isinstalled in the tank to perform one or more functions. The tank toolfurther includes a fluid action zone configured to act on one or morefluids traveling in the internal passageway of the body of the tanktool. The fluid action zone includes at least one fluid action memberfor acting on one or more fluids traveling in the internal passageway ofthe body of the tank tool.

Another preferred embodiment of the present invention is directed to atank tool for a tank containing one or more fluids. The tank toolincludes a first body having an internal passageway, an upper end and alower end. The internal passageway of the first body extends between theupper end of the first body and the lower end of the first body. Thelower end of the first body is configured to connect a first hose to thefirst body so that a fluid can travel in the internal passageway betweenthe upper end of the first body and the lower end of the first body. Theupper end of the first body includes at least one opening so that theinternal passageway of the first body communicates with an interior ofthe tank when the tank tool is installed in the tank to perform one ormore functions. The tank tool further includes a second body connectedto the first body of the tank tool so that the first body and the secondbody can be removed or installed in the tank as a unit. The second bodyis offset horizontally from the first body. The second body having aninternal passageway offset horizontally from the internal passageway ofthe first body. The second body further includes an upper end and alower end. The internal passageway of the second body extends betweenthe upper end of the second body and the lower end of the second body.The lower end of the second body is configured to connect a second hoseto the second body so that a fluid can travel in the internal passagewayof the second body between the upper end of the second body and thelower end of the second body. The upper end of the second body includesat least one opening so that the internal passageway of the second bodycommunicates with an interior of the tank the said tank tool isinstalled in the tank to perform one or more functions. The tank toolfurther includes a fluid action zone configured to act on fluidtraveling in the internal passageway of one of the first body and thesecond body of the tank tool. The fluid action zone includes at leastone fluid action member for acting on one or more fluids traveling inthe internal passageway of one of the first body and the second body ofthe tank tool.

A further preferred embodiment of the present invention is directed to amethod comprising the steps of: (a) providing a tank tool, the tank toolincluding a body having an internal passageway, an upper end and a lowerend, the internal passageway of the body extends between the upper endof the body and the lower end of the body, the lower end of the body isconfigured to connect a hose to the body so that a fluid can travel inthe internal passageway between the upper end of the body and the lowerend of the body, the upper end of the body includes at least one openingso that the internal passageway of the body is in fluid communicationwith an interior of the tank when the tank tool is installed in the tankto perform one or more functions; (b) connecting a first hose to thelower end of the body of the tank tool; (c) positioning the tank tool ina tank wherein during use of the tank tool, the tank has oil, vapor andan oil/vapor interface; (d) performing at least one of the followingsteps: (i) grounding an interior of the tank using at least the tanktool and the first hose; (ii) agitating one or more fluids travelingthrough the internal passageway of the body of the tank tool to stir ormix the one or more fluids traveling through the internal passageway ofthe body of the tank tool; (iii) directing a hot oil adjacent theoil/vapor interface using at least the tank tool and the first hose;and, (iv) attaching the tank tool to a floating roof of the tank so thatthe tank tool moves with the floating roof of the tank.

The above preferred forms of the present invention described aboveprovide various examples of preferred embodiments of the presentinvention and are not to be construed as limiting the present inventionto any of the preferred forms described above.

BRIEF DESCRIPTION OF THE DRAWINGS

FIG. 1 is a perspective view of a tank tool formed in accordance withone preferred embodiment of the present invention.

FIG. 2 is a perspective view of the tank tool depicted in FIG. 1 withportions of the tank tool shown as being transparent so that internalcomponents (e.g., cover supports and agitators) can be readily seen.

FIG. 3 is a bottom, plan view of the tank tool depicted in FIG. 1 withthe detachable floats removed.

FIG. 4 is an elevational view showing in cross-section a portion of thetank tool depicted in FIG. 1 with the detachable floats removed.

FIG. 5 is a perspective view of the tank tool depicted in FIG. 1 withthe detachable floats removed and with the tool cover and main bodyshown as being transparent so that internal components (e.g., coversupports and agitators/impellers) can be readily seen.

FIG. 6 is a sectional perspective view of a tank housing a liquid and agas with the tank tool depicted in FIG. 1 shown in one of many differentpossible operating positions.

FIG. 7 is a partially exploded perspective view of the tank tooldepicted in FIG. 1 .

FIG. 8 is a partially exploded perspective view of the tank tooldepicted in FIG. 1 with the floats removed with portions of the tanktool shown as being transparent.

FIG. 9 is a sectional perspective view of a tank housing a liquid and agas and having a floating roof with another preferred form of tank toolattached directly to the floating roof so that the tank tool and thefloating roof move as a unit. The pontoon type floats attached directlyto the floating roof to float the floating roof have been omitted.

FIG. 10 is an enlarged perspective view of a portion of the embodimentdepicted in FIG. 9 .

FIG. 11 is a sectional perspective view similar to FIG. 6 but with theliquid shown as being transparent so that the components in the liquidcan be readily seen.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS OF THE INVENTION

The preferred forms of the invention are described below with referenceto FIGS. 1-11 . The appended claims are not limited to the preferredforms and no term and/or phrase used herein is to be given a meaningother than its ordinary meaning unless it is expressly stated otherwise.

Various features/functions of preferred forms of the tank tool will nowbe briefly described. This discussion is not to be used to limit thescope of the claims but rather is merely a brief discussion of certainfeatures/functions of preferred forms of the tank tool. In one preferredform, the floats of the tank tool have a cylindrical shape. This designallows for the same width/diameter of the float but an adjustable lengthof the float which allows for a longer run on the cylindrical float.Doing so increases buoyancy. Specifically, this design allows one toreadily modify the amount of pull (buoyancy) by merely extending thelength of the cylinder without altering the diameter of the float. Thetank sizes that preferred forms of the tank tool will be used in varysignificantly (e.g., from 15.5 feet tall and 500-barrel size capacity to50 feet tall and a 500,000-barrel capacity tank). The taller the tankthe longer the hose must be for the tool to work. The longer the hosethe stronger (longer) the floats must be.

The internal components of preferred forms of the tank tool constitute asignificant modification/enhancement/advancement over previously knowndevices. The internal components have multiple functions includingregeneration of fire foam directly released into the tank immediatelybefore release of the fire foam into the “flash zone” directly above atank's top liquid level. The internal components include one or moreimpellers or agitators that rifle, spin or otherwise interact with thefire foam passing through the one or more impellers or agitators tosignificantly increase the efficiency of the fire foam. Efficiency ofthe fire foam is of great importance as tank fires can be extinguishedwith unprecedented speed using the preferred forms of the tank tool.

The one or more impellers or agitators also perform an importantfunction when gas “tank emissions” are pulled downwardly throughpreferred forms of the tank tool and one or more associated hoses withthe preferred forms of the tank tool via a suction pump or othersuitable component. The tank tool works in the “flash zone” of the topof the tanks liquid level, to capture the full spectrum of gases. Thetank tool captures the heaviest of gas molecules that otherwise wouldnot be evacuated from the tank. The one or more impellers or agitatorsact on the heavy gases, rifling, stirring or otherwise mixing the heavygases passing through the hose or hoses keeping the hose or hoses frombuilding up with condensed liquids long enough to prevent disruption ofthe discharge of the heavy gases, i.e., the hose or hoses do not becomeblocked or partially blocked. Keeping the hose or hoses free fromobstructions eliminates downtime due to liquid lock, i.e., partial orcomplete blockage of the hose or hoses. The ability of the preferredtank tool to remove the full spectrum of gases from the tank enablesoperators in the oil production business to lower the Reid VaporPressure on the crude oil in the storage tank. The preferred tank toolcan lower the Reid Vapor Pressure (“RVP”), in part by the one or moreimpellers or agitators.

The secondary or auxiliary body of preferred forms of the tank toolallows for the introduction of hot oil adjacent the liquid/gasinterface. The hot oil significantly reduces RVP. The hot oil may be atany suitable temperature including but not limited to temperaturesranging from approximately 100 degrees Fahrenheit up to the oil'sinitial boiling point. One preferred range is approximately 110 up toand including approximately 160 degrees Fahrenheit.

The one or more impellers or agitators are significant when a storagetank is cleaned. During this process, large volumes of chemicals andwater are pumped into the storage tank to flush or clean the storagetank. The one or more impellers or agitators rifle, stir or otherwiseact to mix the chemicals and water just before release inside thestorage tank. Hence, preferred forms of the tank tool exponentiallyspeed up the tank cleaning process.

The one or more impellers or agitators are also important to cure badoil, i.e., oil that is less than 99% or greater pure crude oil. When oiland water tie up together and create an emulsion, a chemical is appliedto the tanks oil load to treat and alleviate bad oil problems. Runningthe chemical treatment backwards and upwardly through the preferred tanktool allows the chemical treater (i.e., an individual or individuals) toperform the cleaning process from a safe area. Traditionally, during achemical treatment process, one or more chemicals are added by anindividual through one or more tanks lid at the tank's top. The new toolallows one or more individuals to add one or more chemicals at thetank's top liquid level from a position where the individual orindividuals are safe and nowhere near the lid or lids of the tank.

Preferred forms of the tank tool are configured to be attached to afloating roof of an oil tank. A floating roof of an oil tank istypically supported above a liquid level in the tank by one or morefloatation devices (e.g., pontoon type floats) attached directly to andmoveable with the floating roof. Attachment of the tank tool to afloating roof eliminates the need for the tank tool to include floatsand maintains the tank tool in the desired zone/region/section/portionof the tank. However, if desired, the tank tool can still include one ormore floats in addition or in place of one or more floats attacheddirectly to the floating roof. Attachment of the tank tool to thefloating roof ensures that the tank tool will remain in a desiredposition in the tank. For example, a plurality of tank tools can beattached to different portions/regions/sections of a floating roof of atank to act on a given zone/region/section/portion of the tank. Also,attaching the tank tool to the floating roof allows for the collectionof gases from the very top of tank. This eliminates or significantlyreduces the adverse effect gases can have on the floating roof thatdeteriorate or otherwise adversely impact the floating roof.

The internal ends of the floats can be provided with a face/supportplate to reduce stress on the float.

Preferred forms of the tank tool include a secondary or auxiliary bodythat can remove a significant portion of “good oil” (i.e., 99% orgreater pure crude oil) without interruption. Typically, there is atleast 20 foot of good oil above a lower 4 foot of bad oil in a storagetank. Because the secondary or auxiliary body of the tank tool is wellabove the bad oil, the secondary or auxiliary body can be used toevacuate good oil without the possibility of evacuating bad oil.

Further, preferred forms of the tank tool can be used to direct ordischarge chemicals into the tank to treat the bad oil so that the watercan be drained off and all that remains in the tank is good oil. Thesecondary or auxiliary body can also be used to drain oils and/or gasesfrom the tank.

Preferred forms of the tank tool allow for the introduction of nitrogenthrough the main body of the tank tool and released in the tank to causeharmful gases to exit through one or more discharge openings or areasformed in the top or about the top of the tank. The pressurized nitrogenforces the harmful gases out of the one or more discharge openings orareas in the top or about the top of the tank.

Preferred forms of the tank tool and the associated hose or hosesattached to the tank tool can be used to ground the inside of thestorage tank.

FIGS. 1 Through 8 and 11

Referring to FIGS. 1 to 8 and 11 , a tank tool A formed in accordancewith one preferred embodiment of present invention is illustrated in oneof many possible configurations. The tank tool A can take many formsincluding but not limited to the forms disclosed herein.

Tank tool A, in one most preferred form, includes a main body 2 havingan internal passageway 4 disposed and extending between an open, lowerend 6 and an open, upper end 8 of main body 2. A cover 10 is mountedabove open, upper end 8 by one or more cover supports 14 creating aplurality of open areas through which one or more fluid or fluids canpass.

While two cover supports 14 (see, for example, FIG. 5 ) are shown, itwill be readily appreciated that one or more than two cover supports 14may be used to fix cover 10 above open, upper end 8 of main body 2. Alower end 16 of each of the cover supports 14 is preferably connected tointernal wall 18 of main body 2. Lower end 16 of each of the coversupports 14 can be permanently fixed or detachably connected to internalwall 18. An upper end 20 of each of the cover supports 14 is connectedto an inner surface 22 of cover 10. Upper end 20 of each of the coversupports 14 can be permanently fixed or detachably connected to innersurface 22 of cover 10. A vertically extending slot/notch can be formedin a center of the lower cover support 14 so that a center portion ofthe upper cover support 14 can nest in the slot/notch of the lower coversupport 14. Alternatively, two or more cover supports 14 can be formedas a single piece.

Main body 2 includes a fluid action zone B to act on fluid traveling ineither direction (i.e., upwardly or downwardly) through internalpassageway 4. In a most preferred form, the fluid action zone B includesagitators/impellers/blades 30, 32 and 34. Agitators 30, 32 and 34 arepreferably connected to internal wall 18 so that agitators 30, 32 and 34do not move relative to wall 18. The connection can be a detachableconnection where the agitators 30, 32 and 34 can be removed from wall 18or a permanent connection where agitators 30, 32 and 34 cannot beremoved from wall 18.

Agitator 30 is disposed above agitators 32 and 34. Agitator 30 can besimilar in configuration to agitator 32 but oriented differently thanagitator 32 in internal passageway 4 as seen in, for example, FIGS. 4, 5and 7 . Referring to FIG. 7 , each agitator 30 and 32 can include asingle impeller/blade having a center section or segment 40 and outersections or segments 42 and 44 extending outwardly and at an angle tocenter section 40. For example, outer segment 42 can form an obtuseangle (e.g., an angle greater than 180 degrees but less than 270degrees) with a forward surface 46 of section 40 and outer segment 44can form an obtuse angle (e.g., greater than 90 degrees but less than180 degrees) with surface 46 of segment 40.

Agitator 34 can be formed from two or more impellers or blades with oneor more of the impellers or blades having a notch or slot to receive acenter portion of another adjacent impeller or blade. Each impeller orblade of agitator 34 can be formed similar to or the same as agitators30 and 32. Alternatively, agitator 34 can be formed as a single piece.By varying the configuration and/or orientation of the agitators in zoneB, each agitator can act differently on fluid passing through thecorresponding portion of zone B.

Fluid action zone B can be disposed closer to open, lower end 6 thanopen, upper end 8. However, the positioning of fluid action zone B inpassageway 4 can be readily varied as desired. Further, while fluidaction zone B is shown as having three agitators, the number ofagitators may be readily varied as desired. Further, while a space isshown between agitators 32 and 34 and a space is shown between agitators32 and 34 (i.e., no agitator is in direct contact with an adjacentagitator), agitator 32 can be in direct contact with agitators 30 and34. The lower portion of main body can have internal threads 50 fordetachably connecting a fluid transport conduit or hose 52 to the lowerportion of main body 2. However, a hose or conduit can be detachablyconnected to main body 2 in numerous other ways.

Connection junctures/segments/sections 54 are connected to an outersurface of main body 2. The connection can be a permanent connection(e.g. welding) or a detachable connection. Connection segments 54 arepreferably uniformly spaced about the outer circumference of main body2. Referring to FIGS. 4 and 7 , each connection segment 54 preferablyincludes an open end 56 and an internal threaded section 58 which canextend the entire length of segment 54 or a portion thereof fordetachably connecting a threaded inner end 62 of a float support shaft60. Outer end 64 of each float support shaft 60 is preferably threadedto detachably connect to an inner end of a corresponding float 70. Eachfloat 70 preferably includes a connection juncture/segment/section 72similar to sections 54 having an open, inner end and a threaded sectionto allow the threaded outer end 64 of float support shaft 60 to bedetachably connected to a corresponding float 70.

Sections 72 are each preferably connected to a circular face plate 74 ofa corresponding float 70 to reduce stress on the corresponding float 70.The circular face plate 74 can have a diameter less than the diameter ofthe corresponding float 70. The thickness of face plate 74 can be variedas desired. Each float includes a cylindrical body 76 having an innersurface or wall 78, an outer surface or wall 80 and a cylindricalsection 82 connecting inner surface 78 to outer surface 80. Each floatedis sealed to form an interior air/gas chamber. The cylindricalconfiguration of floats 70 allows one to readily modify the amount ofpull (buoyancy) by merely extending the length of the cylindricalsection 82 without altering the diameter of the float.

Tank tool A further includes a secondary or auxiliary body 90 preferablyconnected to main body 2 by one or more support arms 93 such thatsecondary body 90 cannot move relative to main body 2. Lower end 92 ofbody 90 is open and includes internal threads to allow a fluid transportconduit or hose 94 to be detachably connected to lower end 92 of body90. Upper end 96 of body 90 can be formed with one or more open ports 98that allow one or more fluids in tank C to enter body 90 and traveldownwardly through an internal passageway formed in body 90communicating with open ports 98 and open lower end 92 to allow one ormore fluids to be evacuated from the interior of tank C through body 90and hose 94 without passing through main body 2. Similarly, one or morefluids can be injected into tank C through hose 94 and body 90 withoutpassing through main body 2. As is readily seen in FIG. 5 , body 90 isoffset horizontally from body 2 so that the internal passageway of body90 is offset horizontally from the internal passageway of body 2.

Tank tool A can be formed from any suitable material including but notlimited to metal (e.g., stainless steel) or other material. Hoses orconduits 52 and 94 can be connected to a pump (e.g., vacuum pump orpressure pump) to evacuate (vacuum pump) one or more fluids (e.g.,liquid and/or gas) from tank C or inject (pressure pump) one or morefluids (e.g., liquid and/or gas) into tank C. The pumps will be locatedoutside of tank C and may have one or more hoses or conduits connectedfrom an exterior of tank C to a port or access opening formed in aportion of tank C (e.g., a wall of tank C). The lower end of thecorresponding interior hose attached directly to tank tool A will beconnected from the interior of tank C to the port. A closure device maybe provided to seal the port when tank tool A is not being used.

Referring to FIG. 6 , tank C includes a gas 100 above a liquid 102(e.g., oil) creating a gas/liquid interface 104. Preferably, tank tool Ais configured such that open, upper end 8 of main body 2 is disposedabove the gas/liquid interface 104 and ports 98 are disposed just belowand/or adjacent (e.g., at, slightly above or slightly below) gas/liquidinterface 104. This configuration allows for body 2 and body 90 toperform different functions/process. For example, a fire foam or otherfire extinguishing substance can be injected into the “flash zone”directly above a tank's top liquid level. The fluid action zone B actson the fire foam or other fire extinguishing substance to deliver thefire foam or other fire extinguishing substance into the “flash zone” ina superior/optimal condition to suppress/extinguish the fire in anextremely short time period. Also, cleaning fluids can be injected intotank C through body 2 in a superior/optimal condition to thoroughlyclean in the interior of the tank. Further, vapors can be evacuated fromtank body 2 including the heaviest molecules without hose or conduit 52from becoming completely or partially blocked or otherwise obstructed.Moreover, nitrogen can be injected into tank C through body 2 abovegas/liquid interface 104 to cause harmful gases to be discharged out oneor more open areas in the tank roof or adjacent the tank roof.

Body 90, when positioned such that at least a portion of ports 98 aredisposed in the liquid, liquid (e.g., oil) can be evacuated from tank Cthrough body 90 and hose or conduit 94. This allows for only good oil inthe tank C to be evacuated as the ports 98 are positioned above the badoil typically formed in the lower section of tank C. Body 90, whenpositioned adjacent gas/liquid interface 104, can be used to inject hotoil into tank C through hose or conduit 94 and body 90. Further, due tothe configuration of tank tool A, body 2 and body 90 can actsimultaneously to perform different or the same functions. For example,a cleaning fluid can be simultaneously injected into tank C through body2 and body 90. Alternatively, vapor can be evacuated from tank C throughbody 2 while good oil is evacuated from tank C or hot oil is injectedinto tank C through body 90.

Referring to FIGS. 6 and 11 , another preferred feature of thisembodiment will now be described.

Tank tool A is illustrated floating in tank C having a gas/liquidinterface 104. The lower ends of hoses 52 and 94 are connected to accessports 120 and 122, respectively formed in sealed man-way, door or accessarea 124 of tank C. A ground wire 126 connects sealed man-way or door124 to ground bar/rod 128 partially embedded in the ground. A pump(e.g., pressure or vacuum) can be connected using one or more conduitsto each of access ports 120 and 124. Tank C is shown as having a fillpiping system I including a shut-off valve J for filling tank C with adesired liquid (e.g. oil).

The above described preferred (i.e., not required) feature of thisembodiment is particularly advantageous as it grounds the interior oftank C even when the inner wall or walls of tank C are coated with asubstance that does not conduct electricity as the tank tool A, hoses 52and 94, ports 120 and 122, and door 124 can all be formed from or havean electrically conductive material creating an continuous electricalpath from tank tool A to ground wire 126 and ground bar/rod 128.

FIGS. 9 and 10

Referring to FIGS. 9 and 10 , a tank tool D formed in accordance withanother preferred embodiment of present invention is illustrated in oneof many possible configurations in tank E. The tank tool D can take manyforms including but not limited to the forms disclosed herein.

Tank E includes a floating roof F that is typically supported by one ormore pontoon type floats (not shown) connected to the lower or bottomsurface of floating roof F to cause floating roof F to move upwardly anddownwardly as the liquid level increases or decreases, respectively intank E. Tank E may include an annular, flexible seal G connected at oneend to the outer periphery of floating roof F and at the other end tothe inner periphery of the tank wall of tank E. Flexible G is configuredto allow floating roof F to move upwardly and downwardly as the liquidlevel increases or decreases, respectively in tank E.

Tank tool D is similar to tank tool A with the exception that the floats70 and associated floating connection members (e.g., sections 54 andshafts 60) are omitted as tank tool D floats/moves with floating roof F.In describing this embodiment, the same reference numerals will be usedin connection with components that are the same as the embodimentdescribed in connection with FIGS. 1 to 8 .

It is to be noted that tank tool A in the form described in connectionwith FIGS. 1 to 8 can be connected to floating roof F so that the floats70 of tank tool A assist the pontoon type floats of the floating roof For replace the pontoon type floats.

Referring to FIG. 10 , a bracket or connection member 110 is connectedto cover 10. A pair of brackets or connection members 112 are connectedto a lower surface of floating roof F. A bolt 114 passes throughcorresponding openings in member 110 and members 112. Nuts 116 arethreaded onto opposite ends of bolt 114 to detachably connect tank toolD to floating roof F. It is to be noted that numerous other means can beused to detachably connect tank tool D to floating roof F. By directlyconnecting tank tool D to floating roof F, tank tool D is maintained ina desired area or section of the interior of tank E. It should be notedthat two or more tank tools D can be attached to different portions offloating roof F to operate on a given section or area of the interior oftank E.

Referring to FIG. 9 , tank E includes a gas above a liquid (e.g., oil)creating a gas/liquid interface below floating roof F. Preferably, tanktool D is configured such that open, upper end 8 of main body 2 isdisposed above the gas/liquid interface and ports 98 are disposed justbelow and/or adjacent (e.g., at, slightly above or slightly below)gas/liquid interface. Tank tool D can perform the samefunctions/processes described in connection with tank tool A.

While this invention has been described as having preferred designs, itis understood that the each and every preferred design can be furthermodified or adapted following in general the principles of the inventionand including but not limited to such departures from the presentinvention as come within the known or customary practice in the art towhich the invention pertains. The claims are not limited to thepreferred embodiments and have been written to preclude such a narrowconstruction using the principles of claim differentiation.

I claim:
 1. A tank tool for a tank containing one or more fluids, saidtank tool comprising: a body having an internal passageway, an upper endand a lower end, said internal passageway of said body extending betweensaid upper end of said body and said lower end of said body, said lowerend of said body being configured to connect a hose to said body so thata fluid can travel in said internal passageway between said upper end ofsaid body and said lower end of said body, said upper end of said bodyincluding at least one opening so that said internal passageway of saidbody is in fluid communication with an interior of the tank when saidtank tool is installed in the tank to perform one or more functions;and, an agitation zone having at least one agitator to stir or mix fluidentering said internal passageway of said body of said tank tool priorto the fluid reaching said at least one opening of said upper end ofsaid body.
 2. The tank tool of claim 1, further including: at least onefloat operably associated with said body of said tank tool so that saidat least one opening formed in said upper end of said body is disposedabove a liquid/gas interface in the tank when the tank tool is installedin an operating position in the tank.
 3. The tank tool of claim 2,wherein: said body is configured to be attached to a floating roof ofthe tank and the at least one float is connected to the floating roof ofthe tank.
 4. The tank tool of claim 2, wherein: said at least oneagitator is fixed in said internal passageway of said body of said tanktool.
 5. The tank tool of claim 4, wherein: said agitation zone includesa first agitator and a second agitator, said first agitator beingdifferent from said second agitator in at least one of the followingrespects: (i) shape, (ii) orientation; (iii) height; (iv) width; and,(v) volume.
 6. The tank tool of claim 5, wherein: said first agitator isdisposed in said internal passageway of said body.
 7. The tank tool ofclaim 6, wherein: said second agitator is disposed in said internalpassageway of said body, said second agitator is disposed above saidfirst agitator, and said first agitator and said second agitator arefixed to said body so that said first agitator and said second agitatorcannot move relative to said body.
 8. An apparatus, comprising: a tanktool for a tank containing one or more fluids, said tank tool includinga body having an internal passageway, an upper end and a lower end, saidinternal passageway of said body extending between said upper end ofsaid body and said lower end of said body, said lower end of said bodybeing configured to connect a first hose to said body so that a fluidcan travel in said internal passageway between said upper end of saidbody and said lower end of said body, said upper end of said bodyincluding at least one opening so that said internal passageway of saidbody communicates with an interior of the tank when said tank tool isinstalled in the tank to perform one or more functions; said apparatusfurther including at least one of the following: (i) a plurality offixed impellers in said internal passageway of said body; (ii) aconnector connecting said tank tool to a floating roof of the tank whensaid tank tool is installed in the tank; and, (iii) a first hose havinga first end connected to said lower end of said body of said tank tooland a second end connected to a grounded portion of said tank tool whensaid tank tool is installed in said tank, said tank tool and said firsthose being formed from a conductive material to create a continuouselectrical path from said tank tool to said grounded portion of saidtank to ground contents stored in said tank.
 9. The apparatus as setforth in claim 8, wherein: said tank tool includes an additional bodyconnected to said body of said tank tool, said additional body includesan upper end and an internal passageway and wherein said internalpassageway of said body has a length greater than a length of saidinternal passageway of said additional body of said tank tool.
 10. Theapparatus as set forth in claim 9, wherein: said upper end of saidadditional body is disposed below said upper end of said body.
 11. Theapparatus as set forth in claim 8, wherein: said apparatus furtherincluding at least two of the following: (i) a plurality of fixedimpellers in said internal passageway of said body; (ii) a connectorconnecting said tank tool to a floating roof of the tank when said tanktool is installed in the tank, and, (iii) a first hose having a firstend connected to said lower end of said body of said tank tool and asecond end connected to a grounded portion of said tank when said tanktool is installed in said tank, said tank tool and said first hose beingformed from a conductive material to create a continuous electrical pathfrom said tank tool to said grounded portion of said tank to groundcontents stored in said tank.
 12. The apparatus as set forth in claim 8,wherein: said apparatus further including each of the following: (i) aplurality of fixed impellers in said internal passageway of said body;(ii) a connector connecting said tank tool to a floating roof of thetank when said tank tool is installed in the tank, and, (iii) a firsthose having a first end connected to said lower end of said body of saidtank tool and a second end connected to a grounded portion of said tankwhen said tank tool is installed in said tank, said tank tool and saidfirst hose being formed from a conductive material to create acontinuous electrical path from said tank tool to said grounded portionof said tank to ground contents stored in said tank.
 13. The apparatusas set forth in claim 12, wherein: said tank tool further includes anadditional body connected to said body of said tank tool, saidadditional body includes an internal passageway and wherein saidinternal passageway of said body has a length greater than a length ofsaid internal passageway of said additional body of said tank tool. 14.The apparatus as set forth in claim 12, wherein: said tank tool furtherincludes an additional body connected to said body of said tank tool,said additional body includes an upper end and an internal passagewayand wherein said upper end of said additional body is disposed belowsaid upper end of said body.
 15. The apparatus as set forth in claim 14,wherein: a second hose having a first end and a second end, said firstend of said second hose is connected to said additional body when saidtank tool is installed in said tank.
 16. The apparatus as set forth inclaim 15, wherein: a second end of said first hose is connected to afirst access port formed in an access man-way of said tank.
 17. Theapparatus as set forth in claim 16, wherein: a second end of said secondhose is connected to a second access port formed in an access man-way ofsaid tank.
 18. An apparatus, comprising: a tank tool, said tank toolincluding a body having an internal passageway, an upper end and a lowerend, said internal passageway of said body extending between said upperend of said body and said lower end of said body, said lower end of saidbody being configured to connect a hose to said body so that a fluid cantravel in said internal passageway between said upper end and said lowerend of said body, said upper end of said body including at least oneopening so that said internal passageway of said body is in fluidcommunication with an interior of a tank when said tank tool isinstalled in said tank to perform one or more functions; and, said tanktool having an additional body connected to said body of said tank toolso that said body and said additional body can be removed or installedin said tank as a unit, said additional body being offset horizontallyfrom said body, said additional body having an internal passagewayoffset horizontally from said internal passageway of said body, saidadditional body further including an upper end and a lower end, saidinternal passageway of said additional body extending between said upperend of said additional body and said lower end of said additional body,said lower end of said additional body being configured to connect asecond hose to said additional body so that a fluid can travel in saidinternal passageway of said additional body between said upper end ofsaid additional body and said lower end of said additional body, saidupper end of said additional body including at least one opening so thatsaid internal passageway of said additional body communicates with saidinterior of said tank when said tank tool is installed in said tank toperform one or more functions.
 19. The apparatus as set forth in claim18, wherein said internal passageway of said body has a length greaterthan a length of said internal passageway of said additional body ofsaid tank tool.
 20. The apparatus as set forth in claim 18, wherein saidupper end of said additional body is disposed below said upper end ofsaid body.